XIO2001 datasheet(120/131 Pages) TI

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7.3

Nominal Power Consumption

7.4

PCI Express Differential Transmitter Output Ranges

XIO2001 PCI Express™ to PCI Bus Translation Bridge

SCPS212B – MAY 2009 – REVISED JULY 2009

www.ti.com

DEVICES

POWER STATE(1)

VOLTS

AMPERES

WATTS

1.5

0.147

0.221

No downstream PCI devices

D0 idle

3.3

0.062

0.205

Totals:

0.209

0.426

1.5

0.148

0.222

One downstream PCI device

D0 idle

3.3

0.077

0.254

Totals:

0.225

0.476

1.5

0.157

0.236

One downstream PCI device

D0 active

3.3

0.165

0.545

Totals:

0.322

0.780

1.65

0.168

0.277

One downstream (max voltage)

D0 active

3.6

0.188

0.677

Totals:

0.356

0.954

(1)

D0 idle power state: Downstream PCI device is in PCI state D0. Downstream device driver is loaded. Downstream device is not actively

transferring data.

D0 active power state: Downstream PCI device is in PCI state D0. Downstream device driver is loaded. Downstream device is acitvely

transferring data (worst case scenario).

PARAMETER

TERMINALS

MIN

NOM

MAX

UNIT

COMMENTS

UI(1)

Each UI is 400 ps

±300 ppm. UI does not account for SSC

TXP, TXN

399.88

400

400.12

Unit interval

dictated variations.

VTX-DIFF-PP

TXP, TXN

0.8

1.2

VTX-DIFF-PP = 2*|VTXP – VTXN|

Differential peak-to-peak output voltage

VTX-DIFF-PP-LOW

Low-power differential peak-to-peak TX

TXP, TXN

0.4

1.2

VTX-DIFF-PP = 2*|VTXP – VTXN|

voltage swing

This is the ratio of the VTX-DIFF-PP of the second and

VTX-DE-RATIO-3.5dB

TXP, TXN

following bits after a transition divided by the VTX-DIFF-PP of

TX de-emphasis level ratio

the first bit after a transition.

TTX-EYE

(2) (3) (4)

TXP, TXN

0.75

Does not include SSC or RefCLK jitter. Includes Rj at 10

–12.

Minimum TX eye width

TTX-EYE-MEDIAN-to-MAX-JITTER

(2)

Measured differentially at zero crossing points after

Maximum time between the jitter median

TXP, TXN

0.125

applying the 2.5 GT/s clock recovery function.

and maximum deviation from the median

TTX-RISE-FALL

(2)

TXP, TXN

0.125

Measured differentially from 20% to 80% of swing.

TX output rise/fall time

BWTX-PLL

(5)

TXP, TXN

MHz

Second order PLL jitter transfer bounding function.

Maximum TX PLL bandwidth

BWTX-PLL-LO-3DB

(5) (6)

TXP, TXN

1.5

MHz

Second order PLL jitter transfer bounding function.

Minimum TX PLL bandwidth

RLTX-DIFF

Tx package plus Si differential return

TXP, TXN

loss

RLTX-CM

Tx package plus Si common mode return

TXP, TXN

Measured over 0.05–1.25 GHz range

loss

(1)

SCC permits a 0, –5000 ppm modulation of the clock frequency at a modulation rate not to exceed 33 kHz.

(2)

Measurements at 2.5 GT/s require a scope with at least 6.2 GHz bandwidth. 2.5 GT/s may be measured within 200 mils of Tx device's

pins, although deconvolution is recommended.

(3)

Transmitter jitter is measured by driving the transmitter under test with a low jitter "ideal" clock and connecting the DUT to a reference

board.

(4)

Transmitter raw jitter data must be convolved with a filtering function that represents the worst case CDR tracking BW. After the

convolution process has been applied, the center of the resulting eye must be determined and used as a reference point for obtaining

eye voltage and margins.

(5)

The Tx PLL Bandwidth must lie between the min and max ranges given in the above table. PLL peaking must lie below the value listed

above. Note: the PLL B/W extends from zero up to the value(s) specified in the above table.

(6)

A single combination of PLL BW and peaking is specified for 2.5 GT/s implemenations.

Electrical Characteristics

120

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